US Bridges

Santa Clara Ave over State Route 55

Good

Orange County, California · 12-ORA-055-12.30-TUS · Structure no. 55 0864

Built
1997
28 years old
Condition
Good
inspected March 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
278 ft
2 main spans
Daily traffic
6,000
2020 count
Owner
State
State Highway Agency

About this bridge

Santa Clara Ave over State Route 55 is a prestressed concrete continuous box beam or girders - single or spread carrying Santa Clara Ave over State Route 55 in Orange County, California. It was built in 1997, so it is 28 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,000 vehicles a day, roughly 1% of them trucks, projected to reach 8,000 by 2042. The structure is 278 ft (84.7 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSanta Clara Ave
CrossesState Route 55
Location12-ORA-055-12.30-TUS
RouteCity Street 0
CountyOrange County
StateCalifornia
Coordinates33.76711, -117.83143
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length278 ft (84.7 m)
Longest span139 ft (42.4 m)
Deck width52 ft (15.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2020)
Projected traffic8,000 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Santa Clara Ave over State Route 55 built?

It was built in 1997, making it 28 years old in 2025.

What condition is Santa Clara Ave over State Route 55 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2024.

How much traffic does Santa Clara Ave over State Route 55 carry?

About 6,000 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Santa Clara Ave over State Route 55?

The structure is 278 ft (84.7 m) long with a longest span of 139 ft (42.4 m) and a deck 52 ft wide.

Who owns Santa Clara Ave over State Route 55?

It is owned by the State Highway Agency.